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question_answer1)
The mean of 10 observations is\[5.5\]. When one new observation is included in the data set, the mean of the observations becomes\[6.0\]. What is the value of new observation that was added to the data set?
A)
11 done
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B)
10 done
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C)
12 done
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D)
13 done
clear
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question_answer2)
Yoga classes were held for following duration in a particular week.
Day | Duration of exercise (min) |
Sunday | 40 |
Monday | 50 |
Tuesday | 60 |
Wednesday | x |
Thursday | 30 |
Friday | 90 |
Saturday | 90 |
If the average duration of yoga class in the week is 60 minutes, what was the duration of yoga class on Wednesday?
A)
\[60\text{ }min\] done
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B)
\[30\text{ }min\] done
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C)
\[55\text{ }min\] done
clear
D)
\[65\text{ }min\] done
clear
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question_answer3)
What is the arithmetic mean of 2, ...............9, 10 and 11?
A)
\[6.5\] done
clear
B)
7 done
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C)
7.5 done
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D)
8 done
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question_answer4)
The runs scored by India team in recently held five matches ODI series, are 310, 306, 288,222,374. What is the average score of India in the series?
A)
294 done
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B)
300 done
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C)
288 done
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D)
310 done
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question_answer5)
In a data, 11 numbers are arranged in increasing order. If the 9th number is increased by 1; the median increases by
A)
Zero done
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B)
1 done
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C)
\[1.5\] done
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D)
2 done
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question_answer6)
What is the mean of the first seven prime numbers?
A)
\[9\frac{5}{7}\] done
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B)
\[9\frac{5}{8}\] done
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C)
\[7\] done
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D)
\[8\frac{2}{7}\] done
clear
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question_answer7)
The number of candidates who appeared for a certain competitive exam in consecutive six years is 1 lakh, \[1.50\]lakh, 2 lakh, \[1.5\]lakh, \[0.9\]lakh, \[2.7\]lakh. What is the average of the number of candidates who appeared?
A)
\[1\text{ }lakh\] done
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B)
\[1.6\text{ }lakh\] done
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C)
\[1.55\text{ }lakh\] done
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D)
\[2.6\text{ }lakh\] done
clear
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question_answer8)
The mean of 5 observations is 7. If mean of the first three observations is 5 and that of the last three is 9, then the third observation is.
A)
5 done
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B)
10 done
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C)
7 done
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D)
9 done
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question_answer9)
The mean of 8 numbers is 10. If one number is excluded, mean of the remaining numbers becomes9, then the excluded number is
A)
16 done
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B)
9 done
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C)
8 done
clear
D)
17 done
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question_answer10)
The median value of the given data is 98,75,90,181,171,101,94,100, 710, 500, 7,16
A)
97 done
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B)
98 done
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C)
93 done
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D)
99 done
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question_answer11)
When a coin is tossed at random, then the probability of getting a tail is:
A)
\[\frac{1}{3}\] done
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B)
\[\frac{1}{2}\] done
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C)
\[\frac{3}{4}\] done
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D)
\[\frac{1}{4}\] done
clear
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question_answer12)
A coin is tossed 500 times and head is obtained 280 times. On tossing a coin at random, the probability of getting a tail is
A)
\[\frac{1}{99}\] done
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B)
\[\frac{1}{2}\] done
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C)
\[\frac{3}{50}\] done
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D)
\[\frac{11}{25}\] done
clear
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question_answer13)
What is the mode of the data 46, 64, 87,41, 64, 77, 78, 46, 36, 64, 66.
A)
46 done
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B)
77 done
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C)
64 done
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D)
65 done
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question_answer14)
Which of the following is true about mean?
A)
It occurs most frequently done
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B)
It divides observations into two equal parts. done
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C)
It is representative of the whole group. done
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D)
It is the sum of observations. done
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question_answer15)
If each entry of a data is increased by 2, how does the mean change?
A)
Remains the same. done
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B)
Increases by 2 done
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C)
Decreases by 5 done
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D)
Becomes half. done
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question_answer16)
The average weight of a sample of 10 fruits is 60 g. Later, it was found that the weighing machine had shown the weight of each fruit 5 g less. What is the correct average weight of a fruit?
A)
\[65\,g\] done
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B)
\[55\,g\] done
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C)
\[50\,g\] done
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D)
\[60\,g\] done
clear
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question_answer17)
The mean of 6, y, 4, x and 11 is 7. Which of the following is true?
A)
\[x+y=14\] done
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B)
\[x-y=14\] done
clear
C)
\[3x+4y=63\] done
clear
D)
\[{{x}^{2}}-{{y}^{2}}=21\] done
clear
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question_answer18)
Which of the following is incorrect about mode?
A)
It is a central tendency done
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B)
It occurs most frequently done
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C)
It may between the maximum and minimum observations done
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D)
It is the average of the two middle terms. done
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question_answer19)
Rajani has a box with 16 marbles numbered from 1 to 16 on each of them. She picks a marble from it without seeing. What is the probability that the marble picked has the number 6 on it?
A)
\[\frac{1}{16}\] done
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B)
\[\frac{1}{8}\] done
clear
C)
\[\frac{3}{8}\] done
clear
D)
\[\frac{1}{2}\] done
clear
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question_answer20)
Which of the following statements is correct?
A)
The mean, median, and mode of a data set are always equal done
clear
B)
A data set can have more than one mode done
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C)
A data set can have more than one median done
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D)
A data set can have more than one mean done
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question_answer21)
Faces of a cubical block is painted in violet, pink, blue, green, yellow & orange colour. The block is rolled. What is the probability of getting orange colour?
A)
\[\frac{2}{3}\] done
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B)
\[\frac{1}{2}\] done
clear
C)
\[\frac{1}{3}\] done
clear
D)
\[\frac{1}{6}\] done
clear
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question_answer22)
The given table shows the number of students in various classes of a certain school for the academic session 2016-17.
Class | I | II | III | IV | V |
Number of students | 90 | 100 | 70 | 80 | 90 |
Which bar graph correctly represents the given information?
A)
B)
C)
D)
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question_answer23)
The given double bar graph shows the literate population of five cities I, II, III, IV, V along with the population of literate females. |
|
Which city has the largest literate male population? |
A)
II done
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B)
IV done
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C)
III done
clear
D)
I done
clear
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question_answer24)
Which of the following is true?
A)
The mean of the first 7 natural numbers is the same as their median. done
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B)
The mean of the first 7 natural numbers is the same as the mean of the first 7 whole numbers. done
clear
C)
The median of the first 7 whole number is the same as the mean of the first 7 natural numbers. done
clear
D)
The mode of first 7 whole numbers is 7. done
clear
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question_answer25)
The pie - chart depicts the results of a survey conducted to identify the favorite game of some students.
Home many students like other games if the total number of students is 360?
A)
100 done
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B)
90 done
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C)
55 done
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D)
65 done
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question_answer26)
In which of these situations is a double bar graph useful?
(i) Enrolment of students in class VII in 2009 and 2010. |
(ii) Marks obtained in Term I and Term II examinations. |
(iii) Marks obtained in all subjects of a term examination. |
A)
(i) and (ii) done
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B)
(ii) and (iii) done
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C)
(iii) and (i) done
clear
D)
(i) only done
clear
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question_answer27)
The median of first seven consecutive even numbers a, b, c, d, e, f and g is
A)
\[\left( c+e \right)/4\] done
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B)
b done
clear
C)
\[\left( a+g \right)/2\] done
clear
D)
\[\left( a+b+c+d \right)/4\] done
clear
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question_answer28)
The mean, median and mode of the following data are respectively: 5, 17,21,21,7,13,1,3
A)
12, 12, 21 done
clear
B)
21, 21, 21 done
clear
C)
11, 10, 21 done
clear
D)
11, 7, 21 done
clear
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question_answer29)
The mean age of 29 students of a class is 11 years. If the age of their teacher is also included then the mean is increased by one year. What is the age of the teacher?
A)
40 years done
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B)
51 years done
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C)
41 years done
clear
D)
55 years done
clear
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question_answer30)
The mean temperature of Day 1, Day 2 and Day 3 is \[40{}^\circ C\]. The mean temperature of Day 2, Day 3 and Day 4 is \[41{}^\circ C\]. If the temperature of Day 4 is \[30{}^\circ C,\] then the temperature on Day 1 is:
A)
\[31{}^\circ C\] done
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B)
\[33{}^\circ C\] done
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C)
\[41{}^\circ C\] done
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D)
\[27{}^\circ C\] done
clear
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question_answer31)
The median of the following observations arranged in ascending order is 24, find x. \[11,\text{ }12,\text{ }14,\text{ }18,\text{ }x+2,\text{ }x+4,\text{ }30,\text{ }32,\text{ }35\]and 41.
A)
\[10\] done
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B)
\[23\] done
clear
C)
\[21\] done
clear
D)
\[26\] done
clear
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question_answer32)
What is the mean of n, \[n+1,\text{ }n+3,\text{ }n+7,\]and \[n+9\]?
A)
\[n+2.5\] done
clear
B)
\[n+4\] done
clear
C)
\[n+6\] done
clear
D)
\[n+6.5\] done
clear
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question_answer33)
Find out the marks in SST from pie chart given below, if the total marks be 540.
A)
\[174\] done
clear
B)
\[99\] done
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C)
\[147\] done
clear
D)
\[120{}^\circ \] done
clear
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question_answer34)
The diagrammatic representation with the help of pictures is called:
A)
Histogram done
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B)
Pie chart done
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C)
Pictogram done
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D)
Bar chart done
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question_answer35)
Which of these is certain to happen?
A)
You look older yesterday than today done
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B)
You look older today than yesterday done
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C)
A tossed coin will land heads up. done
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D)
Tomorrow will be a sunny day. done
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question_answer36)
Which of these is impossible to happen?
A)
A tossed coin lands with heads up. done
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B)
A tossed die lands up with 3 on top. done
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C)
The next traffic light is green done
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D)
A die thrown lands up with 8 on top. done
clear
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question_answer37)
Which of these event has probability = 1 certainly?
A)
A tossed coin lands with heads up. done
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B)
The sim rises in the east. done
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C)
A die thrown lands with 3 on the top. done
clear
D)
The sun revolves around the earth. done
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question_answer38)
Direction: The bar graph shows the marks obtained by four students in quarterly examination. |
|
Whose performance was the best?
A)
Kundan done
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B)
Kritika done
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C)
Shyam done
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D)
Mohan done
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question_answer39)
Direction: The bar graph shows the marks obtained by four students in quarterly examination. |
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Which two students secured equal marks?
A)
Kritika & Mohan done
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B)
Kritika & Shyam done
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C)
Mohan & Shyam done
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D)
Shyam & Mohan done
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question_answer40)
The run scored by 11 member of a cricket team are: 34, 0, 29, 34, 69, 73, 69, 6, 0, 34, 96. If we represent the given data by using tally diagram, which score with have the highest frequency:
A)
0 done
clear
B)
34 done
clear
C)
69 done
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D)
96 done
clear
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